With the Bosnian peace talks moving into their critical stage, Secretary of State Warren Christopher is going to Dayton to help keep the negotiations on track. "They're slogging through the talks now," reports TIME's Douglas Waller, "and hope to get an agreement on the Bosnian/Croatian federation by the end of week. That's a very important part of these talks -- and there's still a lot of haggling between Croatia's Franjo Tudjman and Bosnia's Alija Izetbegovic -- but that's minor compared to the difficulties in sorting out the Bosnian/Serb agreement. That's hung up on things like the status of Sarajevo and territorial issues like the corridor between Sarajevo and Goradze. It has been slow going this week and with the hard work beginning Christopher is going to apply more pressure to all sides."